//here we considered that cpu can at least load 4 bits union_bytes

#include<stdio.h>
void byteorder()
{
	union
	{
		short value;
		char union_bytes[sizeof(short)];
	}test;

	test.value = 0x0102;
	
	if ((test.union_bytes[0] == 1) && (test.union_bytes[1] == 2))
	{
		printf("big endian\n");
	}

	else if ((test.union_bytes[0]==2)&&(test.union_bytes[1] == 1))
	{
		printf("little endian\n");
	}
	else
	{
		printf("unknown..\n");
	}
}
